BIGBLINDMEDIA Presents Nothing but the Truth (Download and Gimmicks) by Cameron Francis - DVDA killer, self working packet trick that comes with 5 specially printed USPCC gaff cards."Incredibly awesome effect that I highly recommend you purchase." 4. 5 5, Jeff Stone, Magic Reviewed. comA card is selected by a spectator and hidden away. The magician (that's you) then reaches into their pocket and retrieves a state of the art Lie Detector machine. (Ok, it's actually a small packet of beautifully printed cards that you carry round in your wallet